Transient conduction for thermal diffusivity simulation of a graphene/polymer and its full-field validation with image reconstruction

2021 ◽  
Vol 256 ◽  
pp. 113141
Author(s):  
Asimina Manta ◽  
Matthieu Gresil ◽  
Constantinos Soutis
Keyword(s):  
Thermal Diffusivity ◽  
Image Reconstruction ◽  
Field Validation ◽  
Full Field ◽  
Transient Conduction

Interior tomography in microscopic CT with image reconstruction constrained by full field of view scan at low spatial resolution

2018 ◽  
Vol 63 (7) ◽  
pp. 075006 ◽  
Author(s):  
Shouhua Luo ◽  
Tao Shen ◽  
Yi Sun ◽  
Jing Li ◽  
Guang Li ◽  
...  
Keyword(s):  
Image Reconstruction ◽  
Spatial Resolution ◽  
Field Of View ◽  
Full Field

Thermal Diffusivity Determination of High-Temperature Levitated Oblate Spheroidal Specimen by a Flash Method

1998 ◽  
Vol 120 (3) ◽  
pp. 777-781 ◽  
Author(s):  
F. Shen ◽  
J. M. Khodadadi
Keyword(s):  
Thermal Diffusivity ◽  
Transfer Problem ◽  
Oblate Spheroid ◽  
Single Step ◽  
Flash Method ◽  
Conduction Heat Transfer ◽  
Oblate Spheroidal ◽  
Flash Technique ◽  
Transient Conduction

In extending the range of applicability of a recently developed method, a single-step containerless flash technique for determining the thermal diffusivity of levitated oblate spheroidal oblate spheroidal samples is proposed. The flash method is modeled as an axisymmetric transient conduction heat transfer problem within the oblate spheroid. It is shown that by knowing the sample geometric parameters and recording the temperature rise history at least at two different points on the surface simultaneously, the thermal diffusivity can be determined without knowing needed for determining the thermal diffusivity of oblate spheroidal samples are provided.

scholarly journals Finite element modelling of air cavities effect on GnP/epoxy nanocomposite thermal response and its full-field validation

2018 ◽  
Vol 188 ◽  
pp. 01014
Author(s):  
Asimina Manta ◽  
Matthieu Gresil ◽  
Constantinos Soutis
Keyword(s):  
Finite Element ◽  
Thermal Response ◽  
Field Validation ◽  
Element Analysis ◽  
Full Field ◽  
Multi Scale ◽  
Proposed Model ◽  
Air Cavities ◽  
Induced Defects ◽  
Scale Scheme

The manufacturing process of GnP/polymer nanocomposites exhibits important challenges regarding the material quality and how to reduce or eliminate fabrication induced defects. In this work, the effect of air cavities (voids) on the thermal response of nanocomposites is studied by means of finite element analysis on a multi-scale scheme. The proposed model is validated with experimental data by performing generic and full-field comparisons.

scholarly journals Post-Processing Method for Image Reconstruction Enhancement in Integrating-Bucket-Based Full-Field Optical Coherence Tomography

2020 ◽  
Vol 10 (3) ◽  
pp. 830
Author(s):  
Juhyung Lee ◽  
Taeil Yoon ◽  
Byeong Ha Lee
Keyword(s):  
Optical Coherence Tomography ◽  
Image Reconstruction ◽  
Phase Modulation ◽  
Face Image ◽  
Processing Method ◽  
Optical Coherence ◽  
Post Processing ◽  
Full Field ◽  
En Face ◽  
Oct Imaging

An integrating-bucket method is widely used as a reconstruction tool for full-field optical coherence tomography (FF-OCT). However, it requires high-precision adjustments of the phase modulation parameters. If the parameters are not optimal, the reconstructed tomogram will incur severe artifacts. We propose a post-processing method for removing or reducing such artifacts by utilizing a correction factor extracted from a pre-reconstructed tomogram. FF-OCT imaging created using a coin verifies the effectiveness of the method not only for a single en face image but also for an entire 3-D image. It is expected that the proposed method will expand the application of FF-OCT from biomedical imaging to semiconductor wafers or display panel inspections.

3-D Image Reconstruction in Optical Coherence Tomography Systems Based on VTK in OCT Systems

2012 ◽  
Vol 459 ◽  
pp. 320-323
Author(s):  
Yin Qi Feng ◽  
Kun Wang
Keyword(s):  
Optical Coherence Tomography ◽  
Image Reconstruction ◽  
Data Base ◽  
Optical Coherence ◽  
Ray Casting ◽  
Volume Data ◽  
Cross Sectional ◽  
Full Field ◽  
Ray Casting Algorithm

According to a ray casting algorithm，a method of 3-D image reconstruction in optical coherence tomography systems is presented. Volume data formed by a series of cross-sectional 2-D images are obtained experimentally in a traditional OCT system and a full-field OCT system. Using the ray casting algorithm, 3-D images have been reconstructed from these data base on VTK. The 3-D images rendering apparently reflect the corresponding details of samples

Full Field Image Reconstruction Is Suitable for High-Pitch Dual-Source Computed Tomography

2012 ◽  
Vol 47 (11) ◽  
pp. 642-648 ◽  
Author(s):  
Andreas H. Mahnken ◽  
Thomas Allmendinger ◽  
Martin Sedlmair ◽  
Miriam Tamm ◽  
Sebastian D. Reinartz ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Image Reconstruction ◽  
High Pitch ◽  
Full Field ◽  
Dual Source ◽  
Dual Source Computed Tomography

Criteria and Methods for Reliable Three-Dimensional Image Reconstruction

1974 ◽  
Vol 32 ◽  
pp. 330-331
Author(s):  
R. A. Crowther
Keyword(s):  
Image Reconstruction ◽  
Finite Number ◽  
Density Distribution ◽  
Electron Micrographs ◽  
Mathematical Problem ◽  
Three Dimensional ◽  
Ideal Case ◽  
Dimensional Image ◽  
General Object ◽  
The Ideal

The reconstruction of a three-dimensional image of a specimen from a set of electron micrographs reduces, under certain assumptions about the imaging process in the microscope, to the mathematical problem of reconstructing a density distribution from a set of its plane projections.In the absence of noise we can formulate a purely geometrical criterion, which, for a general object, fixes the resolution attainable from a given finite number of views in terms of the size of the object. For simplicity we take the ideal case of projections collected by a series of m equally spaced tilts about a single axis.

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